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Analog Devices Inc./Maxim Integrated MAX14774ATP+
- Part No.:
- MAX14774ATP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
MAX14774ATP+.pdf
- Description:
- IC SW SPST-NOX4 2.5OHM 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:627
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Product details
Overview
MAX14774ATP+ from Analog Devices is a quad single-pole/single-throw (SPST) analog switch designed for high-voltage signal routing in industrial and test equipment. It supports ±25V analog signals using a single 3.0V–5.5V supply, delivers ≤2.5Ω on-resistance at +85°C, features ±100nA max on-leakage current at +85°C, and operates across –40°C to +125°C in a 4mm × 4mm 20-pin TQFN package.
For engineers reviewing the MAX14774ATP+ datasheet, MAX14774ATP+ pinout, MAX14774ATP+ application, or MAX14774ATP+ equivalent, this device is selected for high-common-mode-range switching in ATE systems, RS-485/CAN multiplexing, audio amplifier selection, and fail-safe biasing-where rail-to-rail voltage handling, low leakage, and thermal robustness are critical.
Technical Context
The MAX14774ATP+ integrates three internal charge pumps (5V-regulated, VP, VN) to generate ±33V/–27V bias rails, enabling ±25V analog signal switching without external high-voltage supplies. Its four independent ENx-controlled SPST switches operate with separate logic-level supply (VL = 1.62V–5.5V), decoupling control interface voltage from VCC.
Each switch provides bidirectional ±200mA continuous current capability, short-circuit protection, and maintains ≤18mΩ on-resistance flatness over full signal range. Performance remains stable across –40°C to +125°C, with thermal shutdown activation at +162°C and 23°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±25V - Enables direct switching of industrial bus signals (RS-485, CAN) and audio without level-shifting. |
| On-Resistance (max) | 2.5Ω at +85°C - Ensures minimal insertion loss and voltage drop in precision signal paths. |
| On-Leakage Current (max) | ±100nA at +85°C - Preserves accuracy in high-impedance sensor or instrumentation front-ends. |
| Supply Voltage Range | VCC = 3.0V to 5.5V; VL = 1.62V to 5.5V - Supports mixed-voltage system integration with 1.8V/3.3V/5V controllers. |
| Operating Temperature | –40°C to +125°C - Qualified for under-hood automotive, industrial PLC, and harsh-environment ATE use. |
| Signal Bandwidth | 147MHz (typ) - Supports high-speed USB 2.0 (480Mbps) and fast transient signal routing. |
| Package | 20-pin TQFN (4mm × 4mm, T2044+4C) - Compact footprint with exposed pad for thermal management in dense layouts. |
Pinout & Package
MAX14774ATP+ uses a 20-pin TQFN package (4mm × 4mm, outline 21-100172) with exposed pad (EP) connected to VN. Pin 5 (I.C.) must be tied to GND; pins 10, 16, 18, and 20 are no-connect (N.C.). The EP improves thermal dissipation (θJC = 2°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VP | Positive charge-pump output | Bypass to GND with ≥10nF/100V capacitor; enables +33V bias for high-side switch conduction. |
| 2 GND | Ground reference | Primary return path for VCC, VL, VP, VN, and analog/switch currents. |
| 3 VN | Negative charge-pump output | Bypass to GND with ≥10nF/100V capacitor; enables –27V bias for low-side switch conduction. |
| 4 VCC | Main power supply input | 3.0V–5.5V supply powering internal logic and charge pumps; bypass with 1µF ceramic. |
| 5 I.C. | Internally connected | Must be externally connected to GND per datasheet; not functional as signal pin. |
| 6–9, 17–20 A1–A4, B1–B4 | Analog switch terminals | Four independent SPST channels: A1↔B1, A2↔B2, A3↔B3, A4↔B4; rated for ±25V, ±200mA. |
| 11–15 EN1–EN4 | Switch enable inputs | CMOS-compatible digital controls (VL-referenced); high = closed, low = open; no internal pull-ups/downs. |
| 13 VL | Logic supply input | Sets ENx input thresholds (VIL = 0.3×VL, VIH = 0.7×VL); allows 1.62V–5.5V logic interfacing. |
| EP | Exposed thermal pad | Internally connected to VN; must be soldered to PCB thermal plane for θJA = 33°C/W (4-layer board). |
Key Features
| Feature | Design Value |
|---|---|
| Beyond-the-rails signal handling | Supports ±25V analog signals with single 3.0V–5.5V supply via integrated VP/VN charge pumps - eliminates need for dual high-voltage rails. |
| Low on-resistance flatness | 18mΩ typical variation across full ±25V signal range - ensures consistent gain and linearity in precision measurement paths. |
| Thermal robustness | Rated for –40°C to +125°C operation with +162°C thermal shutdown and 23°C hysteresis - prevents latch-up in high-power industrial environments. |
| Short-circuit protected switches | Each channel limits current during overcurrent events - protects downstream circuitry in fault-prone ATE and instrumentation applications. |
| Flexible logic interface | Separate VL supply (1.62V–5.5V) sets ENx thresholds independently of VCC - simplifies interfacing with 1.8V FPGAs or 3.3V microcontrollers. |
Applications
| ATE Signal Routing | RS-485/CAN Multiplexing |
|---|---|
Use Scenario: Automated test equipment routes multiple DUT signals to shared measurement instruments while maintaining isolation between channels. IC Role / Device Role / Timing Role: Quad SPST switch isolates and connects ±25V sensor outputs, power supply rails, or calibration references under digital control. Use Value: Enables reconfigurable test fixtures without manual cabling; ±100nA leakage preserves DC accuracy in µV-level measurements. | Use Scenario: Single connector serves both RS-485 and CAN transceivers in space-constrained industrial gateways or diagnostic tools. IC Role / Device Role / Timing Role: Routes differential bus lines (A/B or CANH/CANL) between two transceiver ICs using ENx control signals. Use Value: Eliminates mechanical relays; 147MHz bandwidth supports full-speed USB 2.0 handshaking during protocol negotiation. |
| Audio Amplifier Selection | RS-485 Fail-Safe Biasing |
Use Scenario: Consumer or pro-audio systems dynamically select between multiple amplifier outputs (e.g., main speaker, headphone, line-out) based on user input. IC Role / Device Role / Timing Role: Switches single-ended or differential audio paths with low THD (<0.002%) due to 2.5Ω RON and 18mΩ flatness. Use Value: Prevents pop/click artifacts during switching; ±200mA rating handles peak currents of Class AB amplifiers. | Use Scenario: Industrial RS-485 nodes apply fail-safe termination and biasing only when active, reducing power consumption in idle states. IC Role / Device Role / Timing Role: Controls connection of pull-up/pull-down resistors (RPD/RPU) to bus lines A/B using EN1–EN4. Use Value: Enables software-configurable bus topology; ±25V rating withstands ESD transients up to ±2kV HBM on A/B pins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX14779ATP+ | Dual SPDT configuration with break-before-make timing (289–500µs); higher ±200nA on-leakage vs. MAX14774ATP+'s ±100nA. | Used where signal path polarity reversal (A1↔ACOM↔A2) is required instead of independent SPST routing. | Select MAX14779ATP+ when SPDT functionality and COM pin routing are needed; not pin-compatible with MAX14774ATP+ due to different control logic (ENA/SA vs. EN1–EN4). |
| ADG5412FBRUZ | Quad SPST with integrated fault protection (±60V continuous, ±75V surge); higher 5.5Ω max RON; requires dual ±15V supplies or charge pump support. | Preferred in safety-critical systems requiring overvoltage lockout and fault reporting, not just signal routing. | Choose ADG5412FBRUZ when fault diagnostics, higher surge tolerance, or fail-safe shutdown are mandatory; MAX14774ATP+ offers lower RON and simpler single-supply operation. |
Compared with MAX14779ATP+, the MAX14774ATP+ provides four independent SPST channels with lower leakage and faster switching (28–60µs vs. 326–600µs), while ADG5412FBRUZ trades off higher RON and supply complexity for integrated fault protection - making MAX14774ATP+ optimal for cost-sensitive, high-precision, single-supply routing tasks.
Availability
MAX14774ATP+ is available at Aetrix Electronics and suitable for automated test equipment (ATE), industrial communication interfaces (RS-485/CAN), and high-fidelity audio systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MAX14774ATP+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX14774ATP+ belongs to Analog Devices' Beyond-The-Rails™ analog switch family, engineered specifically for high-voltage signal routing in single-supply systems where traditional switches fail due to limited common-mode range.
FAQ
What is the maximum analog signal voltage supported by the MAX14774ATP+?
The MAX14774ATP+ supports analog signals from –25V to +25V, enabled by its integrated VP (+33V typ) and VN (–27V typ) charge pumps. This beyond-the-rails capability allows direct switching of industrial bus signals like RS-485 and CAN without external level-shifting circuitry. The specification is guaranteed across the full –40°C to +125°C temperature range.
Does the MAX14774ATP+ require external capacitors, and if so, what values?
Yes, the MAX14774ATP+ requires three external bypass capacitors: a 1µF ceramic capacitor on VCC, a 1µF ceramic capacitor on VL, and two 10nF/100V ceramic capacitors - one from VP to GND and one from VN to GND. These capacitors stabilize the internal charge pumps and ensure specified ±25V signal range and low on-resistance performance. Placement must be as close as possible to the respective pins.
Can the MAX14774ATP+ operate with a 1.8V logic supply?
Yes, the MAX14774ATP+ supports logic input levels from 1.62V to 5.5V via its dedicated VL pin. When VL = 1.8V, the EN1–EN4 input thresholds become VIL ≤ 0.54V and VIH ≥ 1.26V, fully compatible with standard 1.8V CMOS logic. This decoupling from VCC allows seamless interfacing with low-voltage FPGAs or microcontrollers without level translators.
What is the thermal shutdown behavior of the MAX14774ATP+?
The MAX14774ATP+ activates thermal shutdown at +162°C junction temperature with 23°C hysteresis, latching off until junction temperature falls below +139°C. During shutdown, all switches open and supply current drops to <1µA. This protects the device and system during overload or poor heatsinking conditions. The exposed pad (EP) must be soldered to a thermal plane to achieve the rated θJA = 33°C/W on a 4-layer board.
Is the MAX14774ATP+ pin-compatible with other devices in the MAX14774/MAX14779 family?
No, the MAX14774ATP+ is not pin-compatible with the MAX14779ATP+. Although both use the same 20-pin TQFN package, their pin functions differ significantly: MAX14774ATP+ has four ENx control inputs (pins 11–15) and discrete A1–A4/B1–B4 terminals, while MAX14779ATP+ uses ENA/ENB/SA/SB (pins 11–15) and shared ACOM/BCOM pins (17,19). PCB layout must be specific to each part number.
MAX14774ATP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tray
- Product Status:
- Active
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 2.5Ohm
- Channel-to-Channel Matching (ΔRon):
- 18mOhm
- Voltage - Supply, Single (V+):
- 3V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 60µs, 160µs
- -3db Bandwidth:
- 147MHz
- Charge Injection:
- 780pC
- Channel Capacitance (CS(off), CD(off)):
- 31pF
- Current - Leakage (IS(off)) (Max):
- 100nA
- Crosstalk:
- -90dB @ 100kHz
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (4x4)
MAX14774ATP+ FAQ
1.How can I place an order for MAX14774ATP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14774ATP+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX14774ATP+ reliable?
The price and inventory of MAX14774ATP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14774ATP+ is usually 5 days.
3.What payment methods are accepted for MAX14774ATP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14774ATP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14774ATP+?
MAX14774ATP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14774ATP+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX14774ATP+?
For technical support, including MAX14774ATP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14774ATP+ requirements.
6.How does Aetrix verify that MAX14774ATP+ is sourced from the original manufacturer or authorized distributors?
All MAX14774ATP+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX14774ATP+ meets industry standards.
7.What is the process for return or replacement of MAX14774ATP+?
All MAX14774ATP+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX14774ATP+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX14774ATP+ part is unused and in its original packaging.
Return procedure for MAX14774ATP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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